Lloyd Diamond has joined Avantis Medical Systems (Sunnyvale, California) as VP, marketing and sales. Avantis makes catheter-based endoscopic devices.

Julie Shimer has been appointed president/CEO of Welch Allyn (Skaneateles Falls, New York), effective March 5. Shimer has been a member of Welch Allyn’s board since 2002. Welch Allyn makes medical diagnostic and therapeutic devices, cardiac defibrillators, patient monitoring systems and miniature precision lamps.